Attachment for mowing-machines



W. DYER.

ATTACHMENT FOR MOWING MACHINES. APPLICATION FIL-ED Aue.s0, 1920.

1,390,890. PatentedSept. 13,1921.

2 SHEETSSHEET 1.

ATTORNEY WITNESS:

W. DYER.

ATTACHMENT FOR MOWING MACHINES.

APPLICATION FILED AUG.30, 1920.

1,390,890. PatentedSept. 13, 1921.

2 SHEETSSHEET 2.

% BY .NVENTOR WITNESS: AT'T ORIJE'Y UNITED, STATES PATENT OFFICE.

Specification of Letter- Patent Patented se t. 13, 1921.

Application fled August 80, 1980. Serial No. 406,828.

To all whom it may concern:

Be it known that I, WARREN Dyan, a citizen of the United States residin at Mangirlmhin the county of reer an State of oma, have invented new and useful Improvements in Attachments for Mowin Machines, of which the following is a speclfication.

My present invention has reference to a mechanical movement whereby a reci rocatory movement is imparted. to a mem or by a revolving element.

The improvement is primarily, but not necessarily, restricted to use in connection with mowing machines, and has for its object to produce a, means for impartin a reciprocator which wil permit of the same moving in a steadier mannerand which will insure a more positive and powerful stroke than the devices ordinarily employed for this purose.

p A further object is the production of a mechanical movement wherein a reciprocatory movement is imparted to an element by a revolving member, in which the parts are of a simple construction which may be cheaply manufactured and easily applied, and furthermore wherein the parts are not liable to breakage or disorder.

The foregoing objects, and others which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and o erative arran ement of parts, such as is illustrated by t e drawings.

In the drawings Figure 1 is a plan view of the improvement.

Fig. 2 is a side elevation thereof.

Fig. 3 is a sectional view approximately on the line 3-3 of Fig. 2.

Fi 4 is a sectiona view approximately on the line 3-3 of Fi 2.

Fig. 5 is a plan view of the crank shaft.

In the dust pan 1, of a moving machine 2' a fragmentary portion of which is disclosed by the drawings, there is mounted in bearings3 ashaft 4 which is revolved in the usual manner when the machine is in motion. On the base of the dust pan, bet-ween the bearings 3 there is journaled, in a suitable opening therein, a stub shaft 5. The stub shaft extends from a head 6 that is pro movement to the sick e bar vided with a longitudinally extending finger 7, the same having at its outer end an outstanding stud 8 to which the sickle bar 9 is attached. The stub shaft 5 preferably has its outer end threaded and is engaged bg a nut 10. On the head 6 are oppositely isposed upwardly extending arms 11. These arms are arranged ri ht angularl with respect to the finger 7. he arms 11 ave their outer ends provided with alining round 0 enin s that form bearings for trunnions 1 on t e mating sections 0 a bearing member 13. The member 13 preferably has its central portion enlarged outwardly and has a central round opening therethrough. Each of the sections constituting the bearing are of similar construction, and from the said rounded portions are extended to revide what may be termed ears and w ich are designated by the numeral 14. Throu h these ears also are passed the securing e ements which are preferably in the nature of short bolts, WhlCll are engaged by nuts, and also preferably these securmg elements compress flexible plates 15 between the cars, so that the bore of the bearin will be held out of contact with the an u larly reduced portion 16 of the shaft 4. he shaft is inclined in opposite directions, as indicated by the numerals 17 and 18 respectively, from the angle portion 16, and the shoulders 19 formed at the ends of the said angle portion 16 limit the lon itudinal movement of the bearing on the said portion of the shaft. The shaft, at its straight end, inward of the inclined portion 18 has secured thereon a fly wheel 20.

The shaft 4 havinghthe angle portion 16 which is engaged by t e bearing member 13, and which atter has its trunnicns 12 connected to the arms of the swiveled head member 6 causin the latter, incident to the varying angu ar ositions assumed by the bearing upon t e rotation of the shaft, to impart an oscillatory movement to the hea member and the finger 7 carried thereby. This movement is ositive, that is a firm stroke is imparted by the shaft to the bearin and from the bearing to the oscillatory fiead. The shaft can be revolved at a comparatively low rate of speed, but the finger 7 is rapidly reciprocated, and it is thought that the foregoing descnption, when taken in connection with the drawings, will fully set forth the construction and advantages of the improvement.

Having thus described the invention, what l5Iclaim,1s:-

1. A 'revoluble shaft WhlCh 1S ournaIed in bearings and which has a reduced angle portion between the bearings, and inclined portions between the straight and angle por- 10 tions, a two-part bearing removably secured to the angle portion of the shaft, connecting means for the sectional bearing, compressible plates between the sections, a member including a head having a stub shaft which is journaled below the bearing, upstanding arms on the head, trunnions on the bearings journaled in openings in the arms, 9, Ion 1- tudinal finger on the head disposed centra 1y between the arms thereof, and an upstanding lug on the end of the figiger. 20 in testimony whereof I a x 111 Bi ature. WARRE D ER. 

